Multiple sclerosis is a chronic and unpredictable disease and is a growing trend and, like other chronic diseases, affects one's quality of life and since sleep quality is one of the dimensions of quality of life, this study aimed to investigate the effect of applying continuous care model on sleep quality of patients with MS in 2013. This clinical trial study was performed on 80 patients with multiple sclerosis who were randomly assigned to experimental and control groups. Data collection tools included demographic information questionnaire, PSQI questionnaire and model implementation in four stages (familiarization, sensitization, control, evaluation). Model stages were performed individually and in groups for three weeks according to patients' educational needs (sleep, activity, medication and nutrition) and after two months follow up, control and evaluation were performed. Data were analyzed using Chi-square test, independent t-test and repeated measures ANOVA and spss16 software. Statistical analysis of variance (ANOVA) with repeated measures showed a significant difference between the mean of total score and the scores of sleep quality dimensions in three times between the two groups (p<0.05). It can be concluded that the implementation of continuous care model causes a significant difference in the sleep quality of patients with MS